The video shows a large aquarium with a prehistoric marine reptile swimming inside. The reptile has a long body, a powerful jaw filled with sharp teeth, and a greenish-gray skin. It is seen swimming towards the glass, its mouth open, and then it swims away. The aquarium is designed to resemble a natural habitat, with rocks, coral, and underwater plants. The water is clear and blue, and light filters down from above. The outside of the aquarium is a concrete structure with metal paneling. The video is shot from a slightly elevated perspective, looking down into the aquarium. The overall impression is one of awe and wonder at the sight of this ancient creature.